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ISO-TURN
NPA 31/2017
IS25 and IS35
New SiAlON Ceramic Grades for Machining High-Temperature Alloys
Highlights
ISCAR is introducing the IS25 and IS35 new SiAlON ceramic grades for machining high- temperature alloys.
Both the IS25 and IS35 ceramic grades were developed for very high cutting speeds and interrupted cut applications on nickel based heat resistant alloys such as Inconel, Waspaloy, Rene, etc.
The new grades are characterized by their high hardness and wear resistance that increase productivity on super alloy materials such as Inconel 718 and Waspaloy. They provide an advantageous performance when compared with conventional carbide grades.
Main Advantages
- Excellent wear resistance and fracture toughness
- Excellent thermal shock resistance
- Excellent for roughing and semi-finishing operations
- Can be used with similar machining conditions such as whisker-reinforced grades
- Price advantage over the whisker reinforced grades
| IS25 | IS35 |
 |
 |
 |
 |
Recommended Cutting Conditions for Ceramic Grades
Ceramic Grades for Machining Super Alloys
| Grade | Vc m/min | Feed m/rev | Depth of Cut mm | Application | Features |
|---|---|---|---|---|---|
| IW7 | 200-400 | 0.1-0.3 | 0.5-2.5 |  | Whisker-reinforced ceramic grade, provides high hardness with excellent toughness for machining Ni based high temperature alloys such as Inconel, Waspaloy etc. |
| IS25 | 200-350 | 0.1-0.4 | 1.0-4.0 |  | Reinforced SiAlON composite grade, Excellent for machining Ni based high temperature alloys such as Inconel, Waspaloy etc. |
| IS9 | 180-230 | 0.1-0.3 | 1.0-3.0 | | A very tough grade with high cutting edge stability. Used for roughing to finishing applications on Ni based high temperature alloys and ductile cast iron. |
| IS35 | 150-250 | 0.2-0.5 | 1.0-4.5 |  | SiAlON ceramic grade, provides high hardness with excellent toughness for machining Ni based high temperature alloys such as Inconel, Waspaloy etc. Suitable for high feed rate and depth of cut. |
| Continuous cut | | Light interrupted | | Heavy interrupted |
Edge Preparation and Recommended Applications
T-Land Sizes for Standard Items
For semi-finishing and
finishing
f < 0.2 mm/rev
finishing
f < 0.2 mm/rev
For semi-roughing and roughing
f > 0.2 mm/rev
f > 0.2 mm/rev
Applications
- Aviation, aerospace and medical equipment industries.
- When replacing whisker grades with ISCAR’s new grades, we recommend increasing the feed. If tool life is too short, the cutting speed should be reduced.
Note: ISCAR is phasing out all turning inserts made from grade IS9, including the following items:
| Cat.No. | Description | |
|---|---|---|
| 5795452 | CNGN 120408E | IS9 |
| 5720017 | CNGN 120412E | IS9 |
| 5720019 | CNGN 120708E | IS9 |
| 5720020 | CNGN 120712E | IS9 |
| 5720021 | CNGA 120408E | IS9 |
| 5720015 | RNGN 120400E | IS9 |
| 5720013 | RNGN 120700E | IS9 |
| 5607362 | RNGN 120700T | IS9 |
| 5794540 | RNGN 120700T01020 | IS9 |
| 5798896 | RNGN 190700T01020 | IS9 |
| 5701808 | RNGX 1207 CH | IS9 |
| 5796533 | SNGN 120408E | IS9 |
| 5720016 | SNGN 120416E | IS9 |
| 5720022 | TNGN 160408E | IS9 |
| 5720023 | TNGA 160408E | IS9 |
RPGX-Ceramic
Round Ceramic Inserts for Machining Nickel Based Alloys and Hardened Steel
Round Ceramic Inserts for Machining Nickel Based Alloys and Hardened Steel
RNGN-Ceramic
Round Double-Sided Ceramic Inserts for Machining Cast Iron,
Nickel Based Alloys and Hardened Steel
Round Double-Sided Ceramic Inserts for Machining Cast Iron,
Nickel Based Alloys and Hardened Steel
RCGX-Ceramic
Round Ceramic Inserts for Machining Nickel Based Alloys and Hardened Steel
Round Ceramic Inserts for Machining Nickel Based Alloys and Hardened Steel
CNGN-Ceramic
80° Rhombic Double-Sided Ceramic Inserts with a T-Land for Machining Cast Iron,
Hardened Steel and Nickel Based Alloys
80° Rhombic Double-Sided Ceramic Inserts with a T-Land for Machining Cast Iron,
Hardened Steel and Nickel Based Alloys
CCLNR/L
Clamp Lock Tools Carrying the Ceramic Negative 80° Rhombic Inserts
Clamp Lock Tools Carrying the Ceramic Negative 80° Rhombic Inserts
CRDNN
Clamp Lock Neutral Tools Carrying Ceramic Round Negative Inserts
Clamp Lock Neutral Tools Carrying Ceramic Round Negative Inserts
CRGNR/L
Clamp Lock Tools Carrying the Ceramic Round Negative Inserts
Clamp Lock Tools Carrying the Ceramic Round Negative Inserts
CRGCR/L
Clamp Lock Tools Carrying Ceramic Round 7° Positive Inserts
Clamp Lock Tools Carrying Ceramic Round 7° Positive Inserts
CRDCN
Clamp Lock Neutral Tools Carrying Ceramic Round 7° Positive Inserts
Clamp Lock Neutral Tools Carrying Ceramic Round 7° Positive Inserts
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